MB-8430: retry to create rest con for ejected nodes

Change-Id: I67d50afc7614062aecd9343f0f93fdba239bfdec
Reviewed-on: http://review.couchbase.org/26900
Reviewed-by: Andrei Baranouski <andrei.baranouski@gmail.com>
Tested-by: Andrei Baranouski <andrei.baranouski@gmail.com>